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diff --git a/ui/views/controls/combobox/native_combobox_wrapper.h b/ui/views/controls/combobox/native_combobox_wrapper.h
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+++ b/ui/views/controls/combobox/native_combobox_wrapper.h
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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_
+#define UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_
+#pragma once
+
+#include "ui/gfx/native_widget_types.h"
+#include "views/views_export.h"
+
+namespace gfx{
+class Size;
+}
+
+namespace views {
+
+class Combobox;
+class KeyEvent;
+class View;
+
+class VIEWS_EXPORT NativeComboboxWrapper {
+ public:
+  // Updates the combobox's content from its model.
+  virtual void UpdateFromModel() = 0;
+
+  // Updates the displayed selected item from the associated Combobox.
+  virtual void UpdateSelectedItem() = 0;
+
+  // Updates the enabled state of the combobox from the associated view.
+  virtual void UpdateEnabled() = 0;
+
+  // Gets the selected index.
+  virtual int GetSelectedItem() const = 0;
+
+  // Returns true if the Combobox dropdown is open.
+  virtual bool IsDropdownOpen() const = 0;
+
+  // Returns the preferred size of the combobox.
+  virtual gfx::Size GetPreferredSize() = 0;
+
+  // Retrieves the views::View that hosts the native control.
+  virtual View* GetView() = 0;
+
+  // Sets the focus to the button.
+  virtual void SetFocus() = 0;
+
+  // Invoked when a key is pressed/release on Combobox.  Subclasser
+  // should return true if the event has been processed and false
+  // otherwise.
+  // See also View::OnKeyPressed/OnKeyReleased.
+  virtual bool HandleKeyPressed(const views::KeyEvent& e) = 0;
+  virtual bool HandleKeyReleased(const views::KeyEvent& e) = 0;
+
+  // Invoked when focus is being moved from or to the Combobox.
+  // See also View::OnFocus/OnBlur.
+  virtual void HandleFocus() = 0;
+  virtual void HandleBlur() = 0;
+
+  // Returns a handle to the underlying native view for testing.
+  virtual gfx::NativeView GetTestingHandle() const = 0;
+
+  static NativeComboboxWrapper* CreateWrapper(Combobox* combobox);
+
+ protected:
+  virtual ~NativeComboboxWrapper() {}
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_